Ghost Shark

While out on a fishing trip in an attempt to catch an elusive fish that's worth thousands of dollars the unexpected happens. A shark eats the fish they where trying to catch costing them the money that they almost had. Angry at the shark the fishers shoot the shark and throw a grenade at it but before it can die the shark escapes. Just as it dies the shark makes it's way into a mystical cave that allows the sharks ghost to escape into the waters. Revenge is now the only thing this Ghost Shark wants and with the ability to appear in any water, even if it's a glass of water in a room, the shark goes on a wide spread killing spree that seems unstoppable and unbelievable.